Benadryl is a brand name of antihistamine drug diphenhydramine. This drug is regarded one of the main representatives of the group of the antihistamine drugs blocking H1-receptors which take part in the appearance of the allergic reaction in response to the irritants.
The peculiarity of Benadryl consists in that it provides the pharmacological action to the body preventing all symptoms of severe allergic reactions and not just removing itching and rash.
Diphenhydramine has antiemetic, sedative, myorelaxing, anti-inflammatory action. It provides a local anesthetic effect and it blocks the activity of the receptors which are responsible for the transfer of excitation to the nerve ganglion. The general pharmacological action helps to improve the tolerance of the allergic reaction and maximally relief the patient’s life on the early stage of the symptom appearance.
In high doses Benadryl provides a soporific effect due to which patients with insomnia connected with the expressed symptoms of allergy may easily fall asleep and they do not suffer from the regular awakenings.
The active components of the drug are well and quickly taken during the oral use, and they also have an ability to penetrate into both circulatory and central nervous system.
Benadryl is ineffective to reduce the symptoms of the bronchial asthma in the setting of histamine signs. It may be used as an additional remedy together with theophyllin or other drugs. But in order to relief this diagnosis other antiallergic remedies will do better.
Also, the patient may experience the following reactions in the first days of the drug use: dry mouth, unpleasant taste, lowering of the arterial pressure, and also difficult urination.
I consistently take benadryl before bed each night. It helps with my allergies as the seasons change. It allows me to sleep for several hours at a time, allowing me to be less susceptible to waking up every hour or so as I do when I sleep without it.
I use the tablet which I'm able to break in half. 1/2 hour later I'm sound asleep. Benadryl has worked for me for the past few years and no side effects. Very effective for sleeping..